Structural Collapse
Six mana to make a player throw away two permanents and take two damage reads like a spite card, and it mostly is one: the sacrificer chooses which artifact and which land go, so this never picks off the keystone permanent you actually want gone. The interesting part is the conjunction. Single-target sacrifice effects usually peel one card off a board; this demands an artifact and a land in the same breath, which narrows it to a hate piece aimed at decks leaning on both at once. Against a player with only one of the two types, the spell still strips that single permanent and lands its two damage; against a player with neither, it collapses to a clunky six-mana Shock with a sorcery's timing. That guaranteed two damage is the floor the design leans on when the sacrifice clause whiffs, but it is a thin floor for the cost. The real problem is the price tag against a target who gets to optimize the loss: by the time six mana comes online, a deck built on artifact-and-land synergy has usually deployed enough redundancy to shrug off surrendering one of each. It is a punitive answer to a board state that has to line up exactly right, asking far too much mana to punish it when it does.
